Yes I do. I also remember my college chemistry classes. And my work in an industry R&D lab evaluating potential replacements for a fluorinated compound.
What do you think they are going to use instead of fluorine?
Something that’s not as good, but good enough. See leaded vs unleaded gasoline for a historical example of industry reacting to regulation. It’ll of course take time and money, and there may be limited use cases where there aren’t any conceivable replacements, but in a lot of cases these compounds are used as a catch-all because they work so well.